CN2649560Y

CN2649560Y - Lifting frame

Info

Publication number: CN2649560Y
Application number: CN 03218244
Authority: CN
Inventors: 刘智军; 张建敏
Original assignee: Qingdao Huatian Hand Truck Co Ltd
Current assignee: Qingdao Huatian Hand Truck Co Ltd
Priority date: 2003-06-15
Filing date: 2003-06-15
Publication date: 2004-10-20
Anticipated expiration: 2013-06-15

Abstract

The utility model discloses a lifting platform, which consists of an outer tube and an inner tube. The outer tube with an exterior pallet has the inner tube, and the lower end of the inner tube contacts the ground, while the upper end is fixed with a screw nut. The nut engages with a thread lead screw. The top end of the lead screw is fixed at the top end of the outer tube through a transmission mechanism. The top end of the outer tube is also equipped with a driving handle which is connected with the transmission mechanism and drives the lead screw to rotate. The lead screw is in relative motion with the inner tube through the screw nut of the inner tube. The heavy object on the exterior pallet is moves along the outer tube, which is in relative movement with the inner tube and the ground, and the lifting platform relies on the relative movement to lift the heavy object. The utility model utilizes the driving handle and the transmission mechanism to control the lifting of the heavy object. The lifting platform is designed according to the needs of the heavy object lifting in the workshop fields, with a simple structure and low cost, which can be easily manufactured.

Description

Crane

(1) technical field

The utility model relates to the improvement of handbarrow, specifically is a kind of crane, and it belongs to the Transport Machinery technical field.

(2) background technology

The equipment of carrying lifting weight has machineries such as gig, shovel car, jack in the prior art.These device structures are all complicated, make also trouble.Only need the weight of lifting to use the said equipment that the suspicion of wasting one's talent on a petty job is arranged for some.Actual workshop operation lifting weight needs jacking equipment a kind of simple in structure, easy to manufacture, cheap.

(3) summary of the invention

The purpose of this utility model is that a kind of crane simple in structure will be provided.Utilize this crane can finish the needs of lifting weight in the operation of actual workshop easily.

Task of the present utility model is finished by following technical scheme, has developed a kind of crane, and it comprises outer tube and interior pipe.Outside having, be set with interior pipe in the outer tube of pallet, should contact to earth interior pipe lower end, its upper end is fixed with nut, this nut is engaged with threaded screw rod, the upper end of this leading screw is fixed on the upper end of outer tube by transmission device, also is provided with the driving crank in this upper end, and this crank links to each other with transmission device, and drive this leading screw and rotate, constitute internally to manage mutually in this leading screw nut on inner pipe and move.

Described transmission device, itself or bevel gear mechanism, or worm-and-wheel gear.

Described outer tube, its upper end also is provided with transmission device protective cover box.

Described transmission device protective cover box, itself or be " U " font cover cap box, or be the pipe segmentation flat cover box on the outer tube segment port.

Described outer tube, its hypomere tube wall are provided with along the axially movable inner process of interior pipe, are provided with the guide rail groove that correspondence is matched with this projection in described on the tube wall of pipe.

Described driving crank, its rotating shaft two ends are installed on " U " font cover box of the transmission device protective cover box on the outer tube, and are provided with circlip; Perhaps these rotating shaft two ends are installed on the tube wall of pipe segmentation flat cover box of outer tube port, also are provided with circlip.

Advantage of the present utility model is: owing to be set with interior pipe in the outer tube of pallet outside having, should contact to earth interior pipe lower end, its upper end is fixed with nut, this nut is engaged with threaded screw rod, the upper end of this leading screw is fixed on the upper end of outer tube by transmission device, also be provided with the driving crank in this upper end, this crank links to each other with transmission device.Shake this crank by manual commentaries on classics, make to connect solid transmission device (bevel gear mechanism, or worm-and-wheel gear) on this crank and can drive this leading screw and rotate, thus constitute in this leading screw nut on inner pipe along the ingear screw thread mutually internally pipe move axially.The moving of this leading screw must drive be fixed on this leading screw by transmission device the outer tube of upper end along interior tubular axis to moving.Because interior pipe contacts to earth, suit outer tube and outer pallet thereof on inner pipe can move relative to ground, thereby reaches the purpose that the weight on the outer pallet is moved picking-up, realizes that the lifting of weight is handled.

(4) accompanying drawing and embodiment

Embodiment accompanying drawings of the present utility model is as follows:

Fig. 1 cuts open figure for the structure office of " U " font cover cap boxlike crane.

Fig. 2 is that the A-A of Fig. 1 is to cutaway view.

Fig. 3 is that the B of Fig. 1 is to view.

Fig. 4 is that the C-C of Fig. 1 is to cutaway view.

Fig. 5 cuts open figure for the structure office of flat cover boxlike crane.

Referring to Fig. 1-5, a kind of crane of making, it comprises outer tube 1 and interior pipe 2.Pipe 2 in outside having, being set with in the outer tube 1 of pallet 3, should contact to earth interior pipe 2 lower ends, its upper end is fixed with nut 4, this nut 4 is engaged with threaded screw rod 5, the upper end of this leading screw 5 is fixed on the upper end of outer tube 1 by transmission device 7, also is provided with in this upper end to drive crank 6, and this crank 6 links to each other with transmission device, and drive this leading screw 5 and rotate, constitute and internally manage 2 mutually in the nut 4 of this leading screw 5 on interior pipe 2 and move.

Described transmission device 7, itself or bevel gear mechanism 7, or worm-and-wheel gear (not drawing among the figure).

Described outer tube 1, its upper end also is provided with transmission device 7 protective cover boxes 8.

Described transmission device 7 protective cover boxes 8, itself or be " U " font cover cap box 8 ', or be pipe segmentation flat cover box 9 on outer tube 1 segment port.

Described outer tube 1, its hypomere tube wall are provided with along interior pipe 2 axially movable inner processes 10, are provided with the guide rail groove 11 that correspondence is matched with this projection 10 on the tube wall of pipe 2 in described.

Described driving crank 6, its rotating shaft 12 two ends be installed in outer tube 1 upper end transmission device 7 protective cover box 8 " U " font cover box 8 ' on, and be provided with circlip 13; Perhaps these rotating shaft 12 two ends are installed on the tube wall of pipe segmentation flat cover box 9 of outer tube 1 port, also are provided with circlip (not drawing among the figure).

Claims

1, a kind of crane, it comprises outer tube and interior pipe, it is characterized in that: be set with interior pipe outside having in the outer tube of pallet, in this contact to earth in pipe lower end, and its upper end is fixed with nut, this nut is engaged with threaded screw rod, the upper end of this leading screw is fixed on the upper end of outer tube by transmission device, also is provided with the driving crank in this upper end, and this crank links to each other with transmission device, and drive this leading screw and rotate, constitute internally to manage mutually in this leading screw nut on inner pipe and move.

2, according to the described crane of claim 1, it is characterized in that: described transmission device, itself or bevel gear mechanism, or worm-and-wheel gear.

3, according to the described crane of claim 1, it is characterized in that: described outer tube, its upper end also is provided with transmission device protective cover box.

4, according to the described crane of claim 3, it is characterized in that: described transmission device protective cover box, itself or be " U " font cover cap box, or be the pipe segmentation flat cover box on the outer tube segment port.

5, according to the described crane of claim 1, it is characterized in that: described outer tube, its hypomere tube wall are provided with along the axially movable inner process of interior pipe, are provided with the guide rail groove that correspondence is matched with this projection in described on the tube wall of pipe.

6, according to the described crane of claim 1, it is characterized in that: described driving crank, its rotating shaft two ends are installed on " U " font cover box of the transmission device protective cover box on the outer tube, and are provided with circlip; Perhaps these rotating shaft two ends are installed on the tube wall of pipe segmentation flat cover box of outer tube port, also are provided with circlip.